I have done a couple of used pipes and found that I had to be more careful drilling the bowl because the heat made it brittle in the bottom.
This guy really needs to get into the epipe market.
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I need a bit of help. I'm about to take the plunge into epipes at epipe mods & thought I read somewhere not to use nipple top batteries with them. I have found some 1500 mah 18350 datteries at Amazon & like the idea of a longer lasting battery but they are nipple top. Am I remembering right? If so do you know of a longer lasting smooth top?